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我正在通过 UIBezierPath 在 uiview 上制作弧线。弧线做得很好，但是当我拍摄此 UIView 的快照以共享弧线时，快照中没有显示。uiview 显示为默认值，圆弧和圆角矩形不显示。这是快照 CGSize sz = CGSizeMake(bottomview.frame.size.width, bottomview.frame.size.height); 的代码

    UIGraphicsBeginImageContext(sz);
    [bottomview.layer renderInContext:UIGraphicsGetCurrentContext()];
    image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    resultImageView.image=image;

这是制作 arc UIBezierPath *aPathbottom = [UIBezierPath bezierPath]; 的代码

[aPathbottom moveToPoint:CGPointMake(0, 262)];





[aPathbottom addLineToPoint:CGPointMake(0, 15)];
[aPathbottom addLineToPoint:CGPointMake(10, 10)];
[aPathbottom addLineToPoint:CGPointMake(20, 6)];
[aPathbottom addLineToPoint:CGPointMake(40, 3.5)];
[aPathbottom addLineToPoint:CGPointMake(60, 6)];
[aPathbottom addLineToPoint:CGPointMake(70, 10)];
[aPathbottom addLineToPoint:CGPointMake(80,15)];

[aPathbottom addLineToPoint:CGPointMake(80, 250)];
[aPathbottom addLineToPoint:CGPointMake(70, 256)];
[aPathbottom addLineToPoint:CGPointMake(60, 260.5)];
[aPathbottom addLineToPoint:CGPointMake(50, 264)];
[aPathbottom addLineToPoint:CGPointMake(55, 264.5)];
[aPathbottom addLineToPoint:CGPointMake(40, 265)];
[aPathbottom addLineToPoint:CGPointMake(45, 264.5)];
[aPathbottom addLineToPoint:CGPointMake(40, 264)];
[aPathbottom addLineToPoint:CGPointMake(20, 260.5)];
[aPathbottom addLineToPoint:CGPointMake(10, 256)];
[aPathbottom addLineToPoint:CGPointMake(0, 250)];
[aPathbottom closePath];


CAShapeLayer *maskLayerbottom = [CAShapeLayer layer];
maskLayerbottom.frame = bottomview.bounds;
maskLayerbottom.path = aPathbottom.CGPath;


bottomview.layer.mask = maskLayerbottom;

我不知道为什么会这样。任何人都可以帮助我。

问候 chakshu 阿罗拉

4

2 回答 2

2

我得到了我尝试过的答案
[bottomview.layer addSublayer:maskLayerbottom];， bottomview.layer.mask = maskLayerbottom;并且来自的快照UIView正在显示弧线。

于 2013-04-12T12:40:40.733 回答
1

你试过添加这个吗？

[bottomview.layer setMasksToBounds:YES];
于 2013-04-11T13:47:49.853 回答